Component for linear guideway and method for making the same

Abstract

A component for linear guideway and method for making the same, wherein the component is an end cap or a bolt cover which is made by bulk molding compound which is injected into a mold and formed into the desired shape by thermal setting. The component can be an assembly made up of a plurality of members, namely, an inserting member which is provided for passage of rolling elements can be formed simultaneously when the component is molded by plastic injection molding. The inserting member is formed by: injecting metal powder into a first mold and forming into an inserting member with acceptable rigidity and precision; putting the inserting member into a second mold and bulk molding compound; then the die material is formed into the desired component by thermal setting directly on the inserting member.

1. A component for linear guideway comprising:
 an elongated rail with a plurality of rolling passages and holes; 
 a slide block movably disposed on the rail and provided with rolling grooves for cooperating with the rolling passages to define a load path, the slide block being further provided with return holes; 
 two end caps mounted at both ends of the slide block and each having a return path which is connected with the load path and the return hole to form a circulation path; 
 a plurality of rolling members rolling within the circulation path; 
 each of the holes of the rail being sealed with a bolt cover; 
 wherein the bolt cover is made of bulk molding compound; 
 the end caps are made of thermal setting material which is selected from the group consisting of unsaturated polyester resin, phenolic resin, Urea resin, epoxy resin, silicone resin, melamine and epoxy insulation, each of the two end caps is further provided with an inserting member in which is defined the return path, and the inserting members are made of metal which is selected from the group consisting of Ni—Fe—C alloy, stainless steel alloy, Mn—Cu alloy, and soft magnetic alloy. 
 
     
     
       2. The component for linear guideway as claimed in  claim 1 , wherein convex and concave engaging portions are formed between the end caps and the inserting members. 
     
     
       3. The component for linear guideway as claimed in  claim 1 , wherein each of the inserting members is provided with at least one penetrating hole for passage of a fixing bolt. 
     
     
       4. The component for linear guideway as claimed in  claim 1 , wherein each of the end caps is provided with at least one fixing hole for insertion of a fixing bolt. 
     
     
       5. The component for linear guideway as claimed in  claim 1 , wherein each of the end caps is further formed with an oil feeding hole and an oil guiding groove which is in communication with the return path and the oil feeding hole, so that oil can be fed into the return passage through the oil feeding hole and the oil guiding groove.